Clamp



UNITED STATES PATENT GEEICEe i WILLIAM o. sTIOKLER, 0E BELLEv PLAINE, KANSAS.

C LAM P.

SPECIFICATION forming part of Letters Patent No. 377,693, dated February 7, 1888. t

' Application tiled October 4, 188i. Serial No. 251,417. (No model.) v

-of which the following is a speciication, reference being had therein to the accompanying drawings.

This invention pertains to certain new and useful improvements in clamps, having` forits object the provision of simple and efficient means for securely holding a plowshare during the course of sharpening the same,lwhereby the latter operation is rendered more easily and readily accomplished.

The invention consistsin a suitably-shaped bar or arm having at one end clamping-arms for hugging the plowshare and a threaded rod for tightly holding the same, substantially as hereinafter fully set forth, and particularly pointed out in the claims'.

In the accompanying drawings, Figure 1 is aview in perspective showingl my invention as applied to a plowshare. Fig. 2 is a side elevation, and Figs. 3 and 4 are detail perspective views.

vIn carrying out my invention I employ a bar or arm, A, curved or bent at one end, and at the eXtreme upper widened end of the vertical portion of this bar or arm the same is provided with a threaded aperture. The other forward end of this arm or bar is provided with or has formed integral therewith an approximately U -shaped bar, B, having two i nwardly-inclined clamping-arms, b b, the same being slightly beveled rearwardly, as shown.

C is a screw-threaded rod passed through the before-referredto aperture in the upper widened end of the vertical portion of the bar or arm A, said rod being provided with a widened flattened outer end, as shown. To the forward inner end of this threaded rod C is secured a keeper-plate, D, provided with a central normally-horizontal groove, d, as shown. This keeperplate is loosely secured on the end of the rod C by projecting the nar-l row end of said rod through a central aperture in said plate, after which the same is clinched.

In practice the point of the plowshare is passed through the Ushaped clamping-bar until the arms thereof bear tightly against the sides of said plowshare, (the bevel of said arms conforming to the bevel of the sides of said vplowshare,) after which the rod C is turned until the keeper-plate D comes in contact with the rear end ofthe horizontal portion of said plowshare, which end enters the groove d of said plate, and by turning said rod C the secure clamping of the plowshare is readily et'- fected.

From what has been said it will be seen that my invention comprises simple and efficient 2. The combination, with the bar orarmfof the U-shaped bar 'havingthe inclined clamping-arms and Vthe threaded rod carrying a keeper-plate, substantially as shown and .described. v

3. The combination, with the bar or arm having the bentehd provided with an aperture, ofthe clamping-bar, the threaded rod, and the keeper-plate, substantially as shown and described.

In testimony whereof I affix my signaturein presence of two witnesses.

WILLIAM C. STICKLER. Witnesses:

E. A. BLACK, WITT T. WALKER. 

